How many movies have Robert Abbott and William R. Moses collaborated on?

They have worked on 3 movies together! Their first movie together was Perry Mason: The Case of the Lethal Lifestyle (1994) while their highest rated movie together was Perry Mason: The Case of the Jealous Jokester (1995). They have not worked together since Perry Mason: The Case of the Jealous Jokester (1995). They are most known for their tv movie films together.